WELL · 42-255-31594 · DISTRICT 2
Weston #1H
Karnes County · Sugarkane (Austin Chalk) field · Horizontal
Weston #1H (API 42-255-31594) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed April 29, 2011.
The RRC has issued 2 drilling permits between 2008 and 2014, permitted to 15,654 ft.
Completion filings report 7 formation tops, including Taylor, Anacacho, Austin Chalk, Upson.
No lease production has been reported under this well’s leases.
Operator of record
Houston, TX · P-5 Y, filed Aug 4, 2025 · 3,191 permits on file · (800) 332-9449
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil EF LLC |
| Production reports | Marathon Oil EF LLCthrough Jul 2024 |
| Latest permit | Marathon Oil EF LLCAug 26, 2014 |
- 15,654
- total depth, ft
- 2
- permits on file
- Aug 26, 2014
- last permit issued
- Apr 29, 2011
- completed
- 0
- cumulative oil, bbl
- 2.82M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2009 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 29, 2011
- Shut in
- —
- Plugged
- —
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the 2 leases this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Weston Gas Unit 1 G-2-274914 | Sugarkane (Austin Chalk) | Marathon Oil EF LLC | 1 | 0 | 707K | Nov 2012 – Jul 2026 |
| Weston G-2-254609 | Sugarkane (Cretaceous) | Marathon Oil EF LLC | 1 | 0 | 2.12M | Jan 2009 – Jul 2014 |
Gas, mcf lease total
Last 12 months 0 · prior 12 3(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Hilcorp Energy CompanyFeb 2010 → Oct 2011
- 2Marathon Oil EF LLCNov 2011 → Jul 2024
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 792696-99 | Field transfer | Marathon Oil EF LLC | Jul 28, 2014 | Aug 26, 2014 | Apr 29, 2011 | 15,654 |
| 669604-99 | Drill | Texas Crude Energy, Inc. | Aug 21, 2008 | Sep 10, 2008 | Apr 29, 2011 | 12,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-254609 | — | — | — | — |
| — | — G-2-274914 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 471 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Taylor | 12,043 | -11,572 |
| Anacacho | 12,202 | -11,731 |
| Anacacho | 12,300 | -11,829 |
| Austin Chalk | 12,300 | -11,829 |
| Upson | 12,319 | -11,848 |
| Austin Chalk | 12,393 | -11,922 |
| Anacacho | 12,454 | -11,983 |
| Upson | 12,572 | -12,101 |
| Aus | 12,645 | -12,174 |
| Anachaco | — | — |
| Austin Chalk | — | — |
| Eagle Ford | — | — |
| Eagle FordEAGLEFORD | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 12,766 | 15,605 | Perforated |
| 12,766 | 15,682 | Perforated |
| 12,784 | 15,645 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 735 | 17.5 | 620 S |
| 9.625 | 6,090 | 12.25 | 1,505 S |
| 7 | 12,250 | 8.75 | 1,025 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Nov 16, 2016 | Nov 11, 2016 | — |
| 00 | May 13, 2016 | Apr 8, 2016 | — |
| 00 | Dec 3, 2014 | Aug 28, 2014 | — |
| 00 | Jul 26, 2012 | Jan 9, 2012 | — |
| 00 | Sep 21, 2010 | May 20, 2010 | — |
| 00 | May 21, 2010 | Sep 16, 2009 | Yes |
| 00 | Feb 18, 2010 | — | — |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-255-31594 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-31594 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/25531594, documented in the API reference.